GrindLog

Privacy Policy

Effective Date: March 28, 2026

GrindLog ("we," "our," or "the App") is a gamified fitness tracking application. Your privacy matters to us. This Privacy Policy explains what data we collect, how we use it, and your rights regarding that data.

1. Information We Collect

We collect only the minimum data necessary to deliver a functional and personalized fitness experience:

• Account Information: Email address and display name used for sign-in and profile identification.
• Fitness & Workout Data: Workout logs, selected muscle groups, session duration, XP earned, and RPG stat progression (Strength, Stamina, Consistency).
• Body Metrics: Height, weight, age, and optionally waist/neck/hip measurements — provided voluntarily for BMI and body-fat tracking.
• Apple HealthKit Data: With your explicit permission, we may read health data such as heart rate, active calories burned, and workout sessions from Apple HealthKit. This data is used solely within the App to enhance your fitness tracking experience.
• Device Information: Device type, operating system version, and app version for crash diagnostics and compatibility.
• Advertising Identifiers: With your explicit consent (via Apple's App Tracking Transparency prompt), we may collect your device's Identifier for Advertisers (IDFA) to deliver personalized advertisements. If you decline, only non-personalized ads are shown.

2. Apple HealthKit Data

We take the use of HealthKit data very seriously:

• HealthKit data is never sold, shared with, or disclosed to third parties, including advertisers, data brokers, or analytics providers.
• HealthKit data is never used for advertising, marketing, or user profiling purposes.
• HealthKit data is used exclusively to display your health metrics within the App and to provide personalized workout insights.
• You may revoke HealthKit access at any time through your device's Settings → Privacy & Security → Health.

3. How We Use Your Data

• To provide, maintain, and improve the App's core fitness-tracking and gamification features.
• To calculate and display your level, rank, XP, and RPG statistics.
• To generate personalized coach messages and workout suggestions.
• To sync your progress securely across devices via your account.
• To diagnose technical issues and improve app stability.
• To display advertisements to free-tier users (see Section 5).

4. Data Storage & Security

Your data is stored securely on Google Firebase infrastructure, which provides enterprise-grade encryption at rest and in transit (TLS 1.2+). We follow industry best practices to protect your information from unauthorized access, alteration, or disclosure.

5. Third-Party Services

We use the following third-party services:

• Firebase (Google): Authentication, database, and cloud storage. Firebase Privacy Policy
• Apple HealthKit: Read-only health data integration (with explicit user consent).
• Google AdMob: Advertising SDK for displaying banner, interstitial, and rewarded advertisements to free-tier users. AdMob may collect device identifiers (IDFA), IP address, and interaction data for ad personalization. PRO subscribers do not see any advertisements. Google Privacy Policy
• RevenueCat: Subscription management and payment processing. RevenueCat processes subscription status data but does not have access to your fitness or health data. RevenueCat Privacy Policy
• Expo / React Native: Application framework for cross-platform delivery.

We request your consent via Apple's App Tracking Transparency (ATT) framework before sharing any advertising identifiers with third parties. If you decline tracking, only non-personalized ads will be shown. HealthKit data is NEVER shared with advertising services or any third party.

6. Advertising

GrindLog displays advertisements to free-tier users through Google AdMob. The types of ads include:

• Banner Ads: Small ads displayed at the bottom of certain screens.
• Interstitial Ads: Full-screen ads shown occasionally between workout sessions.
• Rewarded Ads: Optional ads that users can choose to watch in exchange for bonus XP.

PRO subscribers enjoy a completely ad-free experience. No advertisements of any kind are shown to PRO users.

You may opt out of personalized advertising by declining the App Tracking Transparency prompt or by adjusting your settings in Settings → Privacy & Security → Tracking on your device.

7. Subscriptions & Payments

GrindLog offers optional premium subscriptions (GrindLog PRO). All payments are processed exclusively through your Apple ID via the App Store. We do not collect, process, or store any payment or credit card information. Subscriptions can be managed or cancelled at any time through your device's Settings → Apple ID → Subscriptions.

8. Gamification Disclaimer

The XP, leveling, rank, and badge systems within GrindLog are designed purely for motivation and entertainment. They do not constitute medical advice, professional fitness guidance, or a clinical assessment of your health or physical abilities. Always consult a qualified healthcare professional before starting any exercise program.

9. Children's Privacy

GrindLog is not directed at children under the age of 13. We do not knowingly collect personal information from children. If you believe a child has provided us with data, please contact us so we can promptly delete it.

10. Your Rights

You have the right to:

• Access your personal data stored within the App.
• Delete all of your data at any time through the App's settings (Account → Delete Account).
• Withdraw consent for HealthKit access via your device settings.
• Opt out of personalized advertising via App Tracking Transparency settings.
• Request information about the data we hold by contacting us.

11. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated effective date. Continued use of the App after changes constitutes acceptance of the revised policy.

12. Contact Us

If you have any questions or concerns about this Privacy Policy, please contact us at:

Email: support@grindlog.fit